interface

问题 This might sound like a strange question, but does anybody know how to force Textmate to define the location on screen where Textmate opens new window. I want new window to be opened on top of previous one and with the same size - I find it better for navigation/browsing/switching between windows. 回答1: I think the question has already been (partly) answered. In the past I used a collection of Applescripts to manipulate the size and position of windows, now I use a fork of ShiftIt. It's free

问题 I have been developing a simple touch handler for Android with the possibilites of firing callbacks like onUpdate (when the screen is touched) without having to setup threads. My problem is that my knowledge of Java is fairly limited and i can't do it because i know very little of how to use interfaces. I'm pretty sure that my problem may be a simple typo or something, but i get a NullPointerException when i execute the method from the touch handler (which processed the touch information) so

问题 I am writing a code which uses matrices and advanced operations on them a lot. I am not going to implement a matrix class from the beginning instead I want to have some sort of Matrix abstract class or interface which I define the methods I want for it but it uses another implemented Matrix class through it's core something like: template <typename T> class IMatrix { public: /*some methods and also some operator overloads*/ virtual T operator() (int r, int c)=0; }; as the interface for my

问题 public interface ICalculator { public double multi(double a, double b); public int add(int a, int b); public int sub(int a, int b); } public class Calculator extends ICalculator { protected int add(double a, double b) { return a+b; } public double sub(int zahl1, int zahl2 ) { return a*b; } } why i can't use in the class Calculator a protected method ? My answer is that "protected" is it useful in the same class and in the subclasses . Well couldn't i also think that a method in an implemented

问题 public interface A { public final int a = 0; } Many books say that all variables (constants) in an interface are implicitly public static final yet when I type the above statement explicitly but do not include the keyword static it compiles with no errors and can be referenced by the static way, A.a which indicates that it is still static. Is it static or not, as to me it has to be since you cannot instantiate an interface, as if you had this "instance" variable then you could therefore never

问题 I usually try to find answers here before I post anything, but I'm not even sure how to formulate my question. So here's what I want to do... I want to define a Base Interface, and a Derived Interface. Then, I want to implement the Base Interface, with extra variables and methods. Finally, I want to implemented a Derived class, from the implemented Base Interface BUT ALSO from the Derived Interface. I don't know about you, but my head hurts. If I do something like below, I get Ambiguous

问题 I am having trouble understanding with some of the code snippets about this part of the Java tutorial: http://docs.oracle.com/javase/tutorial/java/IandI/interfaceAsType.html public Object findLargest(Object object1, Object object2) { Relatable obj1 = (Relatable)object1; Relatable obj2 = (Relatable)object2; if ((obj1).isLargerThan(obj2) > 0) return object1; else return object2; } and: public interface Relatable { // this (object calling isLargerThan) // and other must be instances of // the

问题 It was my intention to use the HTTP status codes both in the header and the body of the two response structs. Bu that without setting the status code twice as function parameter and again for the struct to avoid redundancy. The parameter response of JSON() is an interface to allow both structs to be accepted. The compiler throws the following exception: response.Status undefined (type interface {} has no field or method Status) because the response field must not have a status attribute. Is

问题 This is from the ViewController.m file in a starter project from a tutorial for a game. @interface ViewController() //irrelevant stuff omitted @end It's the ViewController() bit that confuses me. I understand the different between public and private interfaces, but I haven't used a private interface til now in Objective-C. I'm used to seeing something like this instead, for the public interface: @interface ViewController : UIViewController So why now is it just the first one, and with

问题 This is the interface public interface ITransporter { TransporterType TransporterType { get; set; } TransportActionResults BeginTransport( Project sourceProject, ProjectBase targetProject); bool CheckTargetExists(ProjectBase project); } Here ProjectBase is an abstract class for all types of project classes. Here is the method inside the class that implements ITransporter interface. public class LocalTransporter : ITransporter { public TransportActionResults BeginTransport( Project